42 Berkeley Square Westminster W1J 5AW
Alterations at roof level including demolition and rebuilding of a mansard, creation of roof terraces, installation of green roof and landscaping; creation of 1st floor balcony; replacement of windows; restoration of roof lantern; alterations to service building; new doors; replacement of rooflights; new balustrading; Internally; alterations including removal of modern partitions and doors and closing up of openings between the buildings to restore them to three separate properties; replacement of existing plant; internal decorations; creation of new cycle facilities and other associated works (site includes 42 Berkeley Square And 1-3 Hill Street).
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Progress
Application details
- Reference
- 25/01330/LBC
- Local authority
- Westminster
- Postcode
- W1J 5AW
- Ward
- WEW_22
- Application type
- All Other
- Property type
- House
Key dates
- Submitted
- 18 Mar 2025
- Validated
- 18 Mar 2025
- Comments close
- 14 Apr 2025
- Target decision
- 13 May 2025
- Decided
- 24 Oct 2025
Estimated project value
£37k–£100k
Typical UK cost for this job type, at inner London rates (2026). Estimated from the proposal description — planning applications do not state build cost. Source: Checkatrade 2026 loft conversion cost guide.
Recently sold nearby
New owners, recently moved in. First work on a house usually follows within months of completing. 8 recent sales are listed below.
- 48N BERKELEY SQUARE, LONDON, W1J 5AXFlat or maisonette · Leasehold · Not a standard market sale · £900,0005 months ago16 Mar 2026
- 34 BERKELEY SQUARE, LONDON, W1J 5BFOther · Leasehold · Not a standard market sale · £22,600,0007 months ago16 Jan 2026
- FLAT 2, GARRICK HOUSE CARRINGTON STREET, LONDON, W1J 7AFFlat or maisonette · Leasehold · £632,0008 months ago12 Dec 2025
- FLAT 4, 33 HILL STREET, LONDON, W1J 5LTFlat or maisonette · Leasehold · £2,320,0009 months ago25 Nov 2025
- FLAT 202, CARRINGTON HOUSE HERTFORD STREET, LONDON, W1J 7RGFlat or maisonette · Leasehold · Not a standard market sale · £1,225,00010 months ago27 Oct 2025
- FLAT 1, AUDLEY COURT, 32 - 34 HILL STREET, LONDON, W1J 5NPFlat or maisonette · Leasehold · £4,100,00010 months ago17 Oct 2025
- 48D BERKELEY SQUARE, LONDON, W1J 5AXFlat or maisonette · Leasehold · £5,488,00011 months ago30 Sept 2025
- 41 FARM STREET, LONDON, W1J 5RPOther · Leasehold · Not a standard market sale · £1,967,55812 months ago21 Aug 2025
Homes here go for about £3,210,000 — the median of the last 4 market sales in W1J (the wider postcode district), £632,000 to £5,488,000.
Contains HM Land Registry data © Crown copyright and database right 2026. This data is licensed under the Open Government Licence v3.0. Sales are matched by postcode, not by property, so a sale listed here may be a neighbouring address. England and Wales only.
Planning constraints
No designations recorded at this location. This is not a formal search — always confirm with the local authority before relying on it.
Designations from planning.data.gov.uk, Open Government Licence v3.0. Indicative only — not a formal local authority search.
Nearby applications
- 43 Berkeley Square Westminster W1J 5APPermittedNext door
- 43 Berkeley Square Westminster W1J 5APPendingNext door
- 43 Berkeley Square Westminster W1J 5APPermittedNext door
- 43 Berkeley Square Westminster W1J 5APPermittedNext door
- 43 Berkeley Square Westminster W1J 5APPermittedNext door
- 43 Berkeley Square Westminster W1J 5APPermittedNext door